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May 28 '15 at 14:03 comment added Jonas The two other forces of evolution are drift and meiotic drive. Michael Lynch fairly convincingly argues that complexity rarely if at all originates from natural selection.
Apr 29 '15 at 23:16 comment added Rover Eye @Shades88 Basically they are small changes in the DNA code. Single Nucleotide Polymorphisms and Insertions Deletions. Anything that causes harm to a cell will cause cell death, and thats the end of that story.
Apr 29 '15 at 6:39 comment added Shades88 I'm not a biologist, just have a lot of curiosity in how molecular machinery in cells work. So I have no idea what SNP and INDEL is. Could u tell me the full-form? And I read somewhere that malfunctioning or wrongly folded protein does a lot of harm to cells so will randomly and then successively forming proteins cause problems?
Apr 28 '15 at 10:46 comment added Rover Eye Usually it's due to SNPs and INDELs that you get new versions of proteins. But again, that's rare where a new protein rises out of nothing. It's a very iterative process, and usually the proteins that make the cut are well conserved from then on. Usually, due to genome duplication events, one gene may code for the protein and the copy will not be under the same selection pressure, allowing it to accumulate mutations and experiment. Was I able to answer what you were asking?
Apr 28 '15 at 10:12 comment added Shades88 So a fully functional protein can form out of random mutation? Or does that too evolve? Can you give me any links of evidence?
Apr 28 '15 at 10:08 history edited Rover Eye CC BY-SA 3.0
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Apr 28 '15 at 10:02 history edited Rover Eye CC BY-SA 3.0
added 156 characters in body
Apr 28 '15 at 9:55 history answered Rover Eye CC BY-SA 3.0